Probably because the political establishment is actively disinterested in what’s best for the US, and are only interested in what’s best for the establishment.
After all, was spending trillions of dollars on 15 years of warfare in the middle east good for Americans, or good for the political establishment? Were the 2008 bailouts good for Americans, or good for the political establishment?
Don’t look to the people who make the problems, to solve the problems. If they cared about solving the problem they wouldn’t have made it to begin with.